Controlling complex robotic platforms is a challenging task, especially in designs with high levels of kinematic redundancy. Novel variable stiffness actuators (VSAs) have recently demonstrated the possibility of achieving energetically more efficient and safer behaviour by allowing the ability to simultaneously modulate the output torque and stiffness while adding further levels of actuation r...

Ira Herskowitz Eric F. Johnson Stephen M. Kosslyn Michael LaBarbera Charles S. Levings Ill Alexander Levitzki Harvey F. Lodish Richard Losick Diane Mathis Anthony R. Means Shigetada Nakanishi Roger A. Nicoll William H. OrmeJohnson Ill Stuart L. Pimm Yeshayau Pocker Dennis A. Powers Ralph S. Quatrano V. Ramanathan Douglas C. Rees T. M. Rice Erkki Ruoslahti David C. Rubie Gottfried Schatz Jozef S...

The entire geometric formulations of the BRST and anti-BRST structures are worked out in presence Nakanishi–Lautrup field. It is shown that general form gauge fixing mechanisms within Faddeev–Popov quantization approach, invariance reflects thoroughly classical symmetry Yang–Mills theories with respect to methods. field also defined as a object. This formulation helps us introduce two absolutel...

By supplementing additional analyses postponed in the previous paper, we complete our construction of manifestly supersymmetric gauge-covariant regularization of supersymmetric chiral gauge theories. We present: An evaluation of the covariant gauge anomaly; the proof of integrability of the covariant gauge current in anomaly-free cases; a calculation of one-loop superconformal anomaly in the ga...

The effect of including an explicit delay time (due to driver reaction) on the optimal velocity model is studied. For a platoon of vehicles to avoid collisions, many-vehicle simulations demonstrate that delay times must be well below the critical delay time determined by a linear analysis for the response of a single vehicle. Safe platoons require rather small delay times, substantially smaller...

We consider Conway polynomials of two-bridge links as Euler continuant polynomials. As a consequence, we obtain simple proofs of the classical theorems of Murasugi and Hartley on Alexander polynomials. We give a modulo 2 congruence for links, which implies the classical modulo 2 Murasugi congruence for knots. We also give sharp bounds for the coefficients of the Conway and Alexander polynomials...

Editorial Board: Editorial Board members are from all over the world Asia, Australia, Europe The Middle East, North and South America. They include wellrespected physicians in the field: Zohair Al-Halees, MD; Mazeni Alwi, MD; Teiji Akaji, MD; Prof. Felix Berger, MD; Fadi Bitar, MD; Prof. Philipp Bonhoeffer, MD; Bharat Dalvi, MD; Horacio Faella, MD; Yun-Ching Fu, MD; Felipe Heusser, MD; Ziyad Hi...

The gauge-invariance properties and singularity elimination of the modified perturbation theory for QCD introduced in previous works, are investigated. The construction of the modified free propagators is generalized to include the dependence on the gauge parameter α. Further, a functional proof of the independence of the theory under the changes of the quantum and classical gauges is given. Th...

The level{1 irreducible highest weight modules of the quantum a ne algebra U q ( b sl n ) are decomposed into irreducible components with respect to the level{0 U 0 q ( b sl n ){action previously de ned in [13]. The components of the decomposition are found to be the so{called tame representations of U 0 q ( b sl n ) parameterized by the skew Young diagrams of the border strip type. This result...